Component Description

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

Component	Description
A/C compressor	Vaporized refrigerant is drawn into the A/C compressor from the evaporator, where it is compressed to a high pressure, high temperature vapor. The hot, compressed vapor is then discharged to the condenser.
Condenser	Hot, highly pressurized vapor is routed through the condenser where it is cooled and condensed into a liquid. Heat from the circulating refrigerant is carried away by cool air flowing through the condenser.
Liquid tank	Refrigerant flows through the liquid tank to eliminate foreign matter or moisture in the refrigerant. The refrigerant pressure sensor is installed on the liquid tank.
Expansion valve	The condensed liquid refrigerant is routed through the expansion valve where it undergoes an abrupt reduction in pressure. The flash expansion of part of the liquid refrigerant lowers the temperature of the liquid and vapor mixture to where it is colder than the space to be cooled.
Evaporator	The cold mixture of liquid and vapor enters the evaporator where the blower motor circulates air across the cooling tubes. That air evaporates the liquid part of the cold mixture cooling the air, transferring heat to the refrigerant. This heated, vaporized refrigerant returns to the compressor to complete the refrigeration cycle.
Intake sensor	The intake sensor measures the temperature of the front evaporator fin temperature. The sensor uses a thermistor which is sensitive to the change in temperature. The electrical resistance of the thermistor decreases as temperature increases.
Refrigerant pressure sensor	Refer to Component Description for VQ40DE and Component Description for VK56VD.